Process of treating cracked hydrocarbons



Patented Aug. 20, 1929.

UNITED STATES PATENT OFFICE.

GUSTAV EGLOFF AND JACQUE C. MORRELL, OI CHICAGO, ILLINOIS, ASSIGNOBS '10 UNI- VERSAL OIL PRODUCTS SOUTH DAKOTA.

COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION 01' PROCESS OF TBEATING mom HYDBOCARBON&

Ro Drawing. Application filed July 3, 1928, Serial No. 120,521. Behewedj'anuary 82, 1929.

This invention relates to im rovernents in process of treating cracked hydrocarbons, and refers more particularly to an improvement in the usual method of treating cracked pressure distillate or cracked gasolene, the invention being more articularly directed to facilitate the removafof the sulphur compounds.

In treating cracked pressure distillate or end point gasolene, one of the usual practices is 'to treat with sul huric acid, caustic, or sodium plumbite. fter this chemical treatment, the oil is usually redistilled with steam to a finished marketable gasolene passing the doctor test and the corrosion test.

It is understood that the foregoing method is merely illustrative of the usual method of treating the products in question. We have discovered that a more efiective removal of the sulphur compounds may be obtained b substituting in whole'or in part for the su phuric acid a solution of copper sulphate in sulphuric acid; for example copper sulphate in various concentrations 0 sulphuric acid solutions, although in most cases a less quantity of copper sulphate relative to sulphuric acid may be used, because it is a better refining agent under the conditions of treating .cracked products con- 'taining sulphur than is the sulphuric acid alone.

The subjecting of distillate to the simultaneous action of sul huric acid and co per sulphate gives the oubly beneficial e ects of refining with the acid as well as with the copper sulphate and sulphuric acid solution. It is recognized that a relatively small amount of copper sulphate will be of these oils.

dissolved in concentrated sulphuric acids, 40 but there is a solution equilibrium between the sulphuric acids and the copper sulphate, the solubility increasing with dilution of the sulphuric acids.

The other refining agents usually made use of in connection with the refining of light distillates such as alkalies, water and absorbent earth may be used. It is of course, recognized, that the use of these other reagents is old, and it is understood that the chief pur ose of this invention is to claim the use 0 copper sulphate in sulphuric acid solution as a step in the refining lge have found thalti gith some cracked 65 pro ucts containin 's ur com unds as for example, that o f ths-(laliform d cracked oils, approximately 0.3 pounds per barrel of copper sulphate will desulphurize these cracked products so that they pass the commercial tests of doctor and corrosion.

We claim as our invention:

. 1. A step in a process for treating cracked products containing sulphur compounds, comprising agitating the oil in the presence 05 of copper sulphate in sulphuric acid solutron.

2. A step in a process for treating a crackedhydrocarbon distillate containing sulphur compounds comprising introducing to the distillate a sulphuric acid solution containing copper sulphate and agitating the distillate, t e copper sulphate present being substantially .3 pounds per barrel of distillate treated.

GUSTAV EGLOFF. JACQUE o. MORRELL. 

